About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Evaluation of Liquid Doping Methods for Use in Laser Powder Bed Fusion |
Author(s) |
Taylor Davis, Tracy Nelson, Nathan Crane |
On-Site Speaker (Planned) |
Taylor Davis |
Abstract Scope |
Laser powder bed fusion (LBPF) is one of the most widely-preferred additive manufacturing (AM) techniques, but it has not yet achieved its potential to spatially vary mechanical properties by spatially tuning the composition in three dimensions. Such control would allow for greater design flexibility and enable optimization of single parts for performance of various functions. Most efforts to achieve composition control have required extensive modifications of the powder delivery system that significantly reduce the build rate. The current study is a preliminary feasibility test for spatial composition control while maintaining standard powder delivery methods. The effects of small amounts of alumina dopant on a 316L stainless steel plate using single-track tests are reported. Size and dispersion of alumina particles in the melt pool, melt pool size and geometry, and the size and structure of resulting grains are compared for a range of process parameters. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |